Adjustment for concentrator-belts



(No Model.)

G. GATES. ADJUSTMENT FOR GONGBNTRATOR BELTS.

No. 584,502. Patented June 15,1897.

Nita STATES ATE r tries,

GEORGE GATES, OF JACKSON, CALIFORNIA.

ADJUSTMENT FOR CONCENTRATOR-BELTS.

, SPECIFICATION forming part of Letters Patent No. 584,502, dated June15, 1897. Application filed May 18, 1896. Serial No. 591,922. (Nomodel.)

To 00% whom it may concern:

Be it known that I, GEORGE GATES, a citizen of the United States,residing at Jackson, county of Amador, State of California, haveinvented an Improvement in Adjustments for Concentrator-Belts; and Ihereby declare the following to be a full, clear, and exact descriptionof the same.

My invention relates to the means for adjusting endless travelingconcentrator-belts,

It consists in certain details of construction which will be more fullyexplained by reference to the accompanying drawings, in which- Figurelis a side elevation showing the application of my-device. Fig. 2 is apartial plan view. Fig. 3 is a detail view of the adjusting device. Fig.4 is a detail of one of the boxes E In the employment of long endlesstraveling belts for the purpose of concentrating and separating valuableprecious and heavy metals and substances from the lighter slimes andtailings these belts are made to travel at a slow rate of progressionarounddrums or rollers at each end of the apparatus by means of anysuitable mechanism. A difficulty arises in the work of concentrationwith these belts by reason of the varying weight of material which mayat times come upon one side or the other of the belt, and by stretchingit causeit to run off of the drums. Myinvention is designed to correctthis difficulty; and it consists in the employment of a roller orrollers adapted to press upon the lower part of an essentially loose orslack belt, with a means for changing the angle of the roller obliquelyto the belt, by which the latter is caused to run to one side or theother, as may be desired.

A is the frame of my concentrator, having the drums or rollers B Bjournaled at opposite ends, and O is the endless traveling belt passingaround these drums,with small intermediate supporting-rollers for theupper part of the belt to keep it approximately straight, the angle ofthe belt being such as will be most eifective for concentratingpurposes' Upon each side of the frame is journaled a screw D, thethreads of which engage with the teeth of a segment E. These segmentshave connected with them extensions E, and in these extensions, uponopposite sides of the framework, are formed closed boxes E in which areloosely fitted and turn the journals of a roller F.

It will be manifest that by turningthe screw in either direction thehanger in which the roller-shafts are journaled may be caused to swingbackward and forward, and by turning one in one direction and the otherin the opposite direction the roller will be set obliquely at anydesired angle with the line of travel of the belt, against the loweressentially slack part of which it presses, as shown. This will causethe belt to run to either one side or the other.

The screwshafts are provided with handwheels or means by which they maybe turned, and when it is seen that the concentrator-belt is inclined torun off the carrying-drun1s of either side this regulating-roller may beadjusted to counteract this action and keep the belt in its properplace.

In the present case I have shown the screws journaled vertically uponthe side of the frame and the toothed segments arranged to engage withthe screws. It will be manifest, however, that the screws may be set inany desired position upon the frame and the seg ments correspondinglyformed upon the hangers so as to be engaged by the screws, the relativeposition of the two not affecting the result.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a concentrator, an endless traveling belt adapted to pass aroundend drums, with the upper portion supported upon intermediate parallelrollers, and the lower portion passing essentially slack or loosely overdirection-drums,one of said drums being mounted to swing and lieobliquely in either direction with the line of travel of the belt.

2. In a concentrator, an endless traveling belt passing around enddrums, with the upper portion supported upon intermediate parallelrollers, and the lower portion passing essentially slack overdirection-drums, one of said drums being mounted to swing to ananliquely in either direction, with the line of 10 travel of the belt.

In witness whereof I have hereunto set my hand.

GEORGE GATES.

\Vitnesses:

S. H. NOURSE, J ESSIE C. BRODIE.

